If you are interested in an Upload add-on for your phpBB Forums, then you can check Photo Album Addon. This is a
phpBB-based photo album/gallery management system. It is really powerful, stable, efficient, rich in features and highly customizable. The version 2 was written from the scratch for more security,
performance, etc. It is not really a modification or hack, it is rather a phpBB-based system.

The Photo Album is an add-on for the standalone phpBB Forums. It has been ported to PHP-Nuke with the Album module (see the Admin Panel Downloads Category of portedmods). This module was only tested with PHP-Nuke 6.5RC2 with phpbb module 2.1 and does not work on a site with the 2.0.6b version of the phpBB module!